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Viewing changes to arch/ia64/include/asm/system.h

  • Committer: Bazaar Package Importer
  • Author(s): Ben Hutchings, Ben Hutchings, Aurelien Jarno, Martin Michlmayr
  • Date: 2011-04-06 13:53:30 UTC
  • mfrom: (43.1.5 sid)
  • Revision ID: james.westby@ubuntu.com-20110406135330-wjufxhd0tvn3zx4z
Tags: 2.6.38-3
http://bugs.debian.org/620124
http://bugs.debian.org/620284
http://bugs.debian.org/620204
[ Ben Hutchings ]
* [ppc64] Add to linux-tools package architectures (Closes: #620124)
* [amd64] Save cr4 to mmu_cr4_features at boot time (Closes: #620284)
* appletalk: Fix bugs introduced when removing use of BKL
* ALSA: Fix yet another race in disconnection
* cciss: Fix lost command issue
* ath9k: Fix kernel panic in AR2427
* ses: Avoid kernel panic when lun 0 is not mapped
* PCI/ACPI: Report ASPM support to BIOS if not disabled from command line

[ Aurelien Jarno ]
* rtlwifi: fix build when PCI is not enabled.

[ Martin Michlmayr ]
* rtlwifi: Eliminate udelay calls with too large values (Closes: #620204)

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Lines of Context:
arch/ia64/include/asm/system.h
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 */
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#define set_mb(var, value)      do { (var) = (value); mb(); } while (0)
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#define safe_halt()         ia64_pal_halt_light()    /* PAL_HALT_LIGHT */
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/*
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 * The group barrier in front of the rsm & ssm are necessary to ensure
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 * that none of the previous instructions in the same group are
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 * affected by the rsm/ssm.
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 */
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/* For spinlocks etc */
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/*
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 * - clearing psr.i is implicitly serialized (visible by next insn)
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 * - setting psr.i requires data serialization
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 * - we need a stop-bit before reading PSR because we sometimes
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 *   write a floating-point register right before reading the PSR
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 *   and that writes to PSR.mfl
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 */
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#ifdef CONFIG_PARAVIRT
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#define __local_save_flags()    ia64_get_psr_i()
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#else
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#define __local_save_flags()    ia64_getreg(_IA64_REG_PSR)
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#endif
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#define __local_irq_save(x)                     \
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do {                                            \
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        ia64_stop();                            \
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        (x) = __local_save_flags();             \
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        ia64_stop();                            \
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        ia64_rsm(IA64_PSR_I);                   \
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} while (0)
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#define __local_irq_disable()                   \
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do {                                            \
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        ia64_stop();                            \
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        ia64_rsm(IA64_PSR_I);                   \
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} while (0)
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#define __local_irq_restore(x)  ia64_intrin_local_irq_restore((x) & IA64_PSR_I)
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#ifdef CONFIG_IA64_DEBUG_IRQ
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  extern unsigned long last_cli_ip;
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# define __save_ip()            last_cli_ip = ia64_getreg(_IA64_REG_IP)
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# define local_irq_save(x)                                      \
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do {                                                            \
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        unsigned long __psr;                                    \
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                                                                \
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        __local_irq_save(__psr);                                \
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        if (__psr & IA64_PSR_I)                                 \
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                __save_ip();                                    \
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        (x) = __psr;                                            \
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} while (0)
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# define local_irq_disable()    do { unsigned long __x; local_irq_save(__x); } while (0)
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# define local_irq_restore(x)                                   \
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do {                                                            \
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        unsigned long __old_psr, __psr = (x);                   \
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                                                                \
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        local_save_flags(__old_psr);                            \
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        __local_irq_restore(__psr);                             \
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        if ((__old_psr & IA64_PSR_I) && !(__psr & IA64_PSR_I))  \
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                __save_ip();                                    \
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} while (0)
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#else /* !CONFIG_IA64_DEBUG_IRQ */
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# define local_irq_save(x)      __local_irq_save(x)
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# define local_irq_disable()    __local_irq_disable()
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# define local_irq_restore(x)   __local_irq_restore(x)
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#endif /* !CONFIG_IA64_DEBUG_IRQ */
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#define local_irq_enable()      ({ ia64_stop(); ia64_ssm(IA64_PSR_I); ia64_srlz_d(); })
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#define local_save_flags(flags) ({ ia64_stop(); (flags) = __local_save_flags(); })
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#define irqs_disabled()                         \
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({                                              \
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        unsigned long __ia64_id_flags;          \
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        local_save_flags(__ia64_id_flags);      \
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        (__ia64_id_flags & IA64_PSR_I) == 0;    \
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})
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#ifdef __KERNEL__
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#ifdef CONFIG_IA32_SUPPORT
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# define IS_IA32_PROCESS(regs)  (ia64_psr(regs)->is != 0)
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#else
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# define IS_IA32_PROCESS(regs)          0
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struct task_struct;
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static inline void ia32_save_state(struct task_struct *t __attribute__((unused))){}
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static inline void ia32_load_state(struct task_struct *t __attribute__((unused))){}
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#endif
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/*
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 * Context switch from one thread to another.  If the two threads have
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 * different address spaces, schedule() has already taken care of
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#define IA64_HAS_EXTRA_STATE(t)                                                 \
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        ((t)->thread.flags & (IA64_THREAD_DBG_VALID|IA64_THREAD_PM_VALID)       \
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         || IS_IA32_PROCESS(task_pt_regs(t)) || PERFMON_IS_SYSWIDE())
 
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         || PERFMON_IS_SYSWIDE())
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#define __switch_to(prev,next,last) do {                                                         \
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        IA64_ACCOUNT_ON_SWITCH(prev, next);                                                      \
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void default_idle(void);
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING
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extern void account_system_vtime(struct task_struct *);
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#endif
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#endif /* __KERNEL__ */
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#endif /* __ASSEMBLY__ */